Rocky Mountain Climbing Gear UX-JQ80-HV6T 10 Large Screw On Climbing Holds 10 screw on rock Climbing holds. Climbing holds are made from Recycled materials The Climbing holds you receive may be different then the holds SHOWN. You will receive 10 large jug style screw on Climbing holds These holds are nontoxic. Our holds are very strong and will stand up to any Climate, hot or cold Holds come in over 200 different unique shapes.